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The Ontario Natural Building Coalition is an advocacy group of designers, builders & homeowners working to promote healthy, high performance natural building strategies in the construction industry.

Upcoming events

21 Sep 2019 9:00 AM • Peterborough
28 Sep 2019 • he The Deanery Project, 751 West Ship Harbour Rd., Lower Ship, Harbour, NS, B0J 1Y0
29 Sep 2019 • Numerous locations across Ontario
05 Oct 2019 9:00 AM • Peterborough
05 Oct 2019 9:30 AM • Peterborough

More events...

Thank you to our 2019 Natural Building Conference Sponsors:


Job Postings

Professional Members - Contact us to list job postings available within your company! View our current Job Postings

Find A Natural Building or Straw Bale Professional

View our Business Directory for a complete list of designers, builders and more

Announcing the NEW Straw Bale Apprenticeship Program

The ONBC in partnership with The Endeavour Centre is now offering a new Apprenticeship Program for Straw Bale Builders. Click here for our Program details.

Discussion Lists

Natural Homes FOR SALE!!

From time to time, homeowners must sell their beloved straw bale home. ONBC members can make their listings visible here, check out the current Homes For Sale Listings.

Self-Serve Membership

Login to edit your profile, change address, renew your membership

Mark your Calendars!

Annual Ontario Natural Building Tour  - Sunday September 29th from 10am-4pm.

A fantastic opportunity to view a wide range of natural homes and buildings across Ontario. The homes feature straw bale, rammed earth, hempcrete and many more natural building methods, as well as alternative energy and heating systems and much more!

The map below shows locations currently confirmed for the tour - but check back often as locations are added almost daily.

If you have a home that you would like to have featured on the tour, please contact us.

Get tickets for this self-guided tour- $10 pp.



The 2019 Ontario Natural Building Coalition's annual

Natural Building Conference & AGM 2019 - over for another year.

This year's theme was: "Healthy Homes"

This year's conference theme was "Healthy Homes".  For our technical content, we were excited to tap into our own roster of professional members to share their expertise on working with healthy, natural materials. How to presentations included material content data research, deciphering MSDS data as well as the famous ‘Red List’. We also pursued presentations by experts on the microbiome currently doing research in the US. There were case studies of a recent renovation as well as the results of fire and water damage to a straw bale building. 

Many thanks to all our presenters, sponsors and attendees - see you all next year!

A big thank you to our 2019 conference sponsors!







See photos of the 2018 conference.

Photos of the 2016 conference here.

Click here for photos of the 2015 conference.

Click here for an article and photos of the 2014 conference.


Visit our Natural Building Gallery to see houses built out of straw, wood & earth!

A Natural Home Tours Thank You

Over the years, many homes and buildings have participated in our Natural Building Annual tour.

Many of the homes that have been featured were models of innovation and energy efficiency and featured living roofs, natural clay wall finishes, rainwater catchment systems, grey water systems, composting toilets, while others incorporated solar and wind electrical systems, high efficiency wood burning appliances, solar domestic hot water systems, as well as a variety of other interesting green technologies.

The Ontario Natural Building Coalition would like to thank all the volunteer homeowners who have over the years graciously opened their doors and welcomed tour-goers. The annual tour would not be possible without them!

Click here for an article about one of the homes on our recent tour.

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